The song "Hallelujah" was originally composed by Canadian singer-songwriter Leonard Cohen in the late 1980s, but it wasn't until a decade later that the song became popular after being covered by singer Jeff Buckley. Although the song's lyrics don't explicitly mention Christmas, it has become a staple of the holiday season due to its religious connotations and emotional resonance. Many people find the song's hopeful message of redemption and hope to be a perfect fit for the joyous spirit of Christmas.